diff --git a/webnotes/model/sync.py b/webnotes/model/sync.py
index 7c2f125c36..ef625cd4bd 100644
--- a/webnotes/model/sync.py
+++ b/webnotes/model/sync.py
@@ -14,7 +14,9 @@ def sync_all(force=0):
 	try:
 		webnotes.clear_cache()
 	except Exception, e:
-		if e[0]!=1146: raise e
+		if e.args[0]!=1146:
+			print webnotes.getTraceback()
+			raise e
 	return modules
 
 def sync_core_doctypes(force=0):
diff --git a/webnotes/sessions.py b/webnotes/sessions.py
index aaa51cb40d..4fd49ca8b4 100644
--- a/webnotes/sessions.py
+++ b/webnotes/sessions.py
@@ -46,7 +46,8 @@ def clear_cache(user=None):
 	webnotes.cache().delete_keys("session:")
 	if webnotes.session:
 		webnotes.cache().delete_keys("bootinfo:" + webnotes.session.user)
-		webnotes.cache().delete_keys("session:" + webnotes.session.sid)
+		if webnotes.session.sid:
+			webnotes.cache().delete_keys("session:" + webnotes.session.sid)
 	
 def clear_sessions(user=None, keep_current=False):
 	if not user: